MRI Safety Jeopardy*

1
MRI Safety Jeopardy
Forces Projectiles Potpourri Heating Screening
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Because when you think MRI safety, think
Jeopardy is a trademark of Sony Digital
Pictures, Inc.
2
Forces 10 points
This is the part of the MRI system that generates
the magnetic field which exerts forces on
ferromagnetic materials that get near.
Because when you think MRI safety, think
3
Forces 20 points
These are the two directional physical forces
that act on ferromagnetic materials in a
magnetic field.
Because when you think MRI safety, think
4
Forces 30 points
For rotation / torque, this is the location
where the twisting forces are strongest inside
the MRI room.
Because when you think MRI safety, think
5
Forces 40 points
For attractive forces, it is the location inside
the magnet room where attractive effects go to
zero.
Because when you think MRI safety, think
6
Forces 50 points
The physical force resisting movement that can be
generated in a non-ferromagnetic metal when in
a powerful magnetic field.
Because when you think MRI safety, think
7
Projectiles 10 points
This type of accident is the most frequent in
MRI. Within the VA system, they cost an average
of 43,172 for each reported accident.
Because when you think MRI safety, think
8
Projectiles 20 points
Though often referred to as if it were one metal,
this is actually a family of steel alloys that
are resistant to corrosion, some of which are
ferromagnetic.
Because when you think MRI safety, think
9
Projectiles 30 points
True / False Translational (projectile) forces
are only applied to objects outside a persons
body?
Because when you think MRI safety, think
10
Projectiles 40 points
This is the name for the ACR Zone in which
projectile risks are the greatest.
Because when you think MRI safety, think
11
Projectiles 50 points
This is the new type of MRI metal detector
that is recommended by the ACR, and cited by
JCAHO, as a means of helping to prevent
projectile accidents.
Because when you think MRI safety, think
12
Potpourri 10 points
This is the new designation for metal-containing
implants or devices, instead of the old MR
Safe, used to identify safe operating
parameters.
Because when you think MRI safety, think
13
Potpourri 20 points
For some MR exams, this can be equal to 120
decibels, equivalent to a jet engine.
Because when you think MRI safety, think
14
Potpourri 30 points
True/False A grey or silver colored portable
oxygen cylinder means that it is
non-ferromagnetic and is not a projectile risk in
the MRI room?
Because when you think MRI safety, think
15
Potpourri 40 points
The new MR Safe designation requires that the
object be, 1. Non-metallic, 2. Not electrically
conductive and, 3. ________.
Because when you think MRI safety, think
16
Potpourri 50 points
This term describes the rate at which the static
magnetic field strength changes as you move
towards or away from the MR gantry.
Because when you think MRI safety, think
17
Heating 10 points
These injuries can result from contact with the
bore wall, proximity to RF coils, or focal
heating of electrically-conductive materials in
the bore with the patient.
Because when you think MRI safety, think
18
Heating 20 points
Because loops can create antennae for focal RF
heating, it is important to place these in
straight runs out of the bore, insulated from
contact with the patient, when used.
Because when you think MRI safety, think
19
Heating 30 points
MRI manufacturers all recommend 1/4 inch to
1/2 inch minimum of this between patients and
the RF coils to avoid focal heating.
Because when you think MRI safety, think
20
Heating 40 points
These wires inside the bodies of some patients
may experience even greater heating if theyre
disconnected from the pulse generator to which
theyre originally attached.
Because when you think MRI safety, think
21
Heating 50 points
These types of burns are possible in MRI because
body tissue is mostly water and is, itself, an
electrical conductor.
Because when you think MRI safety, think
22
Screening 10 points
In addition to the MR patient, these people
should be screened for contraindications before
entering the 5-gauss zone.
Because when you think MRI safety, think
23
Screening 20 points
This is one of two organizations that have
standardized MR screening forms available for
free download, both in English and Spanish.
Because when you think MRI safety, think
24
Screening 30 points
True/False A patient that reports having
received an MR previously does not require full
screening?
Because when you think MRI safety, think
25
Screening 40 points
Along with clinical screening, this is the
other half of pre-MRI screening needed for a
comprehensive screen.
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26
Screening 50 points
This disease, associated with Gadolinium and
impaired kidney function, has all but been
eradicated by improved screening and safer use of
Gadolinium-based agents.
Because when you think MRI safety, think